In a medium bowl, whisk together the flour, granulated sugar, and salt. Using your finger tips, rub in the cold cubes of butter until you have mostly pea-sized chunks of butter covered in flour with a few larger chunks as well. Using a knife or your fingertips, stir in the vodka and apple cider vinegar until large clumps begin to form. Add in the ice water 1 Tbsp at a time until you can form the dough into a ball. Divide the dough in half and form into two balls, using your fingertips to pinch together any dry bits into the dough. Shape the dough into two flat discs and wrap in plastic wrap. Chill for 30 minutes to 1 hour.